Ducati Monster Forum

Moto Board => Tech => Topic started by: pchoiboi on November 23, 2015, 08:31:48 PM

Title: :( Clutch is in, bike is walking
Post by: pchoiboi on November 23, 2015, 08:31:48 PM
Recently changed the oil with Rotella T6
I was at a signal today that did not go green for a while and the temp raised to a point the gauge said "HI"
Then even with the clutch in, the bike started to move forward.
I would also like to add that before this, getting to neutral from 1st gear has been difficult
08 Ducati Monster 695 ~16k

If it requires a clutch adjustment, I was hoping to get some insight on doing so as i am not that mechanically inclined
Title: Re: :( Clutch is in, bike is walking
Post by: Dirty Duc on November 23, 2015, 09:08:37 PM
Replace the clutch and brake fluid... they absorb water with time and get unhappy.  The brake fluid will not be a problem until you really need to stop... :D
Title: Re: :( Clutch is in, bike is walking
Post by: Howie on November 23, 2015, 09:16:01 PM
If changing the fluid and carefully bleeding the clutch doesn't work inspect the clutch slave for leakage.
Title: Re: :( Clutch is in, bike is walking
Post by: pchoiboi on November 29, 2015, 02:27:57 PM
the clutch fluid was a little dark and i replaced all the fluid but the bike still walks with the clutch in on first gear
(pumped the old fluid while pouring in new fluid)

howie,
I checked the lines for leaks but dont seem to see anything

I dont know if it also pertains to the situation but i cant put the bike into neutral unless i turn off the bike
Title: Re: :( Clutch is in, bike is walking
Post by: Howie on November 29, 2015, 07:30:36 PM
Absolutely related, you are dealing with "clutch drag", the clutch is not fully releasing when you pull the lever towards the grip.  Some clutch drag is normal on your 695 on a cold start, but not when warmed up.

Possible causes:
   1. Air in line.
   2. Maladjusted clutch lever.
   3. Fluid leaking.
   4. Fluid bypassing internally in master.
   5. Clutch stack height too high.
   6. Engine oil too heavy
   7. Incorrect pushrod length or slave cylinder.

OK, since you did not change any clutch parts and your engine oil is well within recommended weights we can ignore 5, 6 and 7.  In theory, bleeding is easy.  In practice, particularly when it comes to motorcycles, often not. 

Position the bike so the clutch master reservoir is as level as possible.  Attach snug fitting clear hose to the bleeder.  The other end of the hose should be submerged in a clear container.  pump lever three times slowly and hold lever, open bleeder, close bleeder, release, wash, rinse, repeat until fluid is clear of air bubbles.  Make sure you do not run the reservoir dry.  An extra you can do is take a wire tie and use it to hold the lever against the grip.  This may allow air bubbles to rise to the surface through the compensating port.

Your clutch lever should have 1-1.5mm free play.  Too much free play could lead to drag, too little, partial engagement (clutch will slip).  If your clutch is adjustable for reach, set it at a futhur distance from the grip.

Did you inspect the slave for leakage?  You need to remove the slave to do this.
 




   
Title: Re: :( Clutch is in, bike is walking
Post by: pchoiboi on November 30, 2015, 07:47:05 PM
thanks for the reply Howie

I did flush the clutch fluid out via the method that you gave. Im pretty sure there are no air bubbles since i almost went through a whole bottle to make sure there were no more old fluid and bubbles in the line.

When i took out the clutch slave, there were no leaks that i could see but when i took out the rod, there was a bit of fluid that came out, not sure if this is what you were talking about

As for freeplay, I will have to report later since the bike is a bit a ways from me at the moment
Title: Re:
Post by: Raux on December 01, 2015, 05:57:38 PM
Took me 2 bottles. Then found out slave cylinder seal was gone. But even still bleeding clutch is a PITA.